The Master (Doctor Who)

The Master
Doctor Who character
The Master as portrayed on-screen in chronological order, left to right from top row.
First appearance	Terror of the Autons (1971)
Created by	Terrance Dicks Barry Letts
Portrayed by	Main incarnations Roger Delgado (1971–1973) Peter Pratt (1976) Geoffrey Beevers (1981) Anthony Ainley (1981–1989) Eric Roberts (1996) Derek Jacobi (2007) John Simm (2007–2010, 2017) Michelle Gomez (2014–2017) Sacha Dhawan (2020–2022) Others Norman Stanley (1971) Gordon Tipple (1996) William Hughes (child, 2007) Actors in audio plays
Character biography
Aliases	Emil Keller, Professor Thascales, Colonel Masters, Martin Jurgens, Reverend Magister, Tremas, Kalid, Sir Gilles Estram, Bruce, Professor Yana, Harold Saxon, Razor, Missy (Mistress), Agent O, Grigori Rasputin
Species	Time Lord
Home planet	Gallifrey

The Master, or "Missy (short for Mistress)" in their female incarnation, is a recurring character in the British science fiction television series Doctor Who and its associated spin-off works. They are a renegade alien Time Lord and the childhood friend and later enemy of the title character, the Doctor.

Multiple actors have played the Master since the character's introduction in 1971. Within the show's narrative, the change in actors and subsequent change of the character's appearance is sometimes explained as the Master taking possession of other characters' bodies or as a consequence of regeneration, which is a biological attribute that allows Time Lords to survive fatal injuries or old age.

The Master was originally played by Roger Delgado from 1971 until his death in 1973.^[1] The role was subsequently played by Peter Pratt, Geoffrey Beevers, and Anthony Ainley, with Ainley reprising the role regularly through the 1980s until the series’s cancellation in 1989. Eric Roberts took on the role for the 1996 Doctor Who TV film. Since the show's revival in 2005, the Master has been portrayed by Derek Jacobi, John Simm, Michelle Gomez, and Sacha Dhawan.

Beevers, Roberts, Jacobi, Simm, and Gomez have reprised the role in audio dramas produced by Big Finish Productions. At the same time, Alex Macqueen, Gina McKee, Mark Gatiss, James Dreyfus, and Milo Parker portrayed incarnations unique to Big Finish.